Chapter 5

Chapter 5 is titled - "Plankton".

Summary
A day after the Anchovies' invasion, Spongebob is making Krabby Patties when the Krusty Krab's alarm is heard. Mr. Krabs informs Spongebob and Squidward that Plankton has invaded the Krusty Krab and is running away with its most valuable item. After Spongebob and Mr. Krabs successfully stop Plankton's attempt at stealing the Krabby Patty secret formula, Spongebob asks Mr. Krabs who Plankton is. Mr. Krabs explains to Spongebob that he is the owner of the Chum Bucket, his former friend and his arch-enemy.